Pre-supercharge active air inlet, air exhaust and exchanging exhaust type engine

Abstract

The invention provides a pre-supercharge active air inlet, air exhaust and exchanging exhaust type engine, and belongs to internal combustion engines. On the basis of an existing common four-stroke engine, a whole course supercharge system is additionally arranged, an air inlet valve and an air exhaust valve of an air distribution system are changed into that each one circle is opened or closed atime from the way that one-time opened and closed is carried out each two circles, and the working frequency is doubled. The working time of the air inlet and air exhaust is uniform roughly, the overlap range of the air inlet valve and the air exhaust valve opened together is larger than the opened range separately, rapid flushing exhaust ventilation is carried out on waste gas in a cylinder by using air derived from the supercharge system, most part of waste gas is removed, then compression power is carried out, the power stroke is more than the compression stroke, the expansion ratio is larger than the compression ratio, and this is the simplest waste gas in the cylinder cycle and the simplest and high-efficiency miller cycle. Ignition and fuel supply are controlled to be changed to onecircle a time from two circles a time by a control system, one circle for power once, the fuel combustion is sufficient, the efficiency is high, the power per liter is high, and the power smooth-goingand discharging is good.

Description

technical field [0001] The invention relates to an internal combustion engine, which is a pre-pressurized active intake and exhaust exchange type engine. Background technique [0002] Existing engine work generally consists of four strokes: suction stroke, compression stroke, power stroke, and exhaust stroke. Two circles complete a cycle. Only the power stroke does positive work, and the other three strokes do negative work. As a result, the actual efficiency is much lower than the theoretical efficiency. The existing two-stroke engine adopts air intake and air outlet at the two ends of the cylinder. The structure determines that this engine pollutes a lot and wastes fuel. Contents of the invention [0003] In order to overcome the problem that the existing four-stroke engine only performs power stroke once every two revolutions and the existing two-stroke engine has a lot of pollution and wastes fuel, the present invention provides a pre-pressurized active intake and exha...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the existing four-stroke engine only performs power stroke once every two revolutions and the existing two-stroke engine has a lot of pollution and wastes fuel, the present invention provides a pre-pressurized active intake and exhaust exchange type engine, the engine structure It is similar to the existing four-stroke engine, but it does work once in a circle, the fuel is fully burned, the emission is good, the efficiency is high, the power is high, and the power is smooth

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